Not sure if this is the right place to be posting this but ... I found out a few days ago that my long term relationship was a complete lie. He was using crystal meth, picking up men on the internet and then having them come over (hosting as they call it) to his house while his roommates were at work. He's 35 and lives with his sister and her husband for free and he is having total strangers come over, have sex and use hard core drugs. Well, of course I dumped him and I am in shock but now I'm left with...do I tell someone? His sister could have her house taken away if there was a drug bust, these strangers could rob her blind, he needs to be found out about his crystal meth use etc. or do I just walk away quietly. Please help!